激光拉曼光谱法在单个流体包裹体研究中的应用进展

激光拉曼光谱法以其非破坏性、高灵敏度和高分辨率等特性,一直以来都是研究流体包裹体的重要方法之一。近年来,围绕激光拉曼光谱在流体包裹体中的应用而展开的研究主要集中在半定量-定量测试方面,即在准确定性的基础上,采用高斯-洛仑兹去卷积分峰、低温原位等定量方法获取流体包裹体的成分和含量,从而克服了激光拉曼光谱法应用于溶液中阳离子的定量分析的灵敏度、准确度较低的问题,不仅能获得流体包裹体中一些常温下不具拉曼活性的盐类物质拉曼特征峰信息,还能根据特征峰与浓度、内压之间的线性关系,进一步对盐度和压力等性质进行测定,从而拓展了激光拉曼光谱法在流体包裹体中的应用范围。本文对激光拉曼光谱法应用于分析流体包裹体成分、盐度、同位素和压力所取得的最新进展进行了评述,并认为随着分析测试技术的不断进步,激光拉曼光谱法未来的分析方向也将继续围绕多元复杂体系及其定量方面的研究展开。

Research Progress on the Application of Laser Raman Spectroscopy in Single Fluid Inclusions

Raman Spectroscopy is an important tool for studying fluid inclusion due to its nondestructive analysis, high sensitivity and high resolution. In recent years, applications of Raman Spectroscopy in fluid inclusions have focused mainly on semi-quantitative to quantitative analyses. Based on accurate qualitative analysis, the Gauss-Lorentz Quantitative method and In-situ Cryogenic Raman Spectroscopy are used to determine the components and element contents of fluid inclusions, resolving the low sensitivity and accuracy of Raman Spectroscopy in quantitative analysis of cations in solution. Moreover, according to the linear relationship between characteristic peak and concentration and pressure, salinity and pressure of fluid inclusions can be further determined, expanding the application of Raman Spectroscopy in fluid inclusions. In this paper, the recent advance in application of Laser Raman Spectroscopy in analyzing the composition, salinity, isotopes, and pressure of fluid inclusions is reviewed. As the advancement of analytical techniques continues, the application of Laser Raman Spectroscopy in fluid inclusions will focus on complex systems and quantitative analyses.